Invention Grant
- Patent Title: Method and device for offsetting bounce effects in a piezo-actuated injection system of an internal combustion engine
- Patent Title (中): 用于抵消内燃机的压电致动喷射系统中的反弹效应的方法和装置
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Application No.: US11722323Application Date: 2005-12-22
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Publication No.: US08239115B2Publication Date: 2012-08-07
- Inventor: Stefan Ascher , Reiner Lederle , Hans-Jörg Wiehoff
- Applicant: Stefan Ascher , Reiner Lederle , Hans-Jörg Wiehoff
- Applicant Address: DE Hannover
- Assignee: Continental Automotive GmbH
- Current Assignee: Continental Automotive GmbH
- Current Assignee Address: DE Hannover
- Agency: King & Spalding L.L.P.
- Priority: DE102004062073 20041223
- International Application: PCT/EP2005/013959 WO 20051222
- International Announcement: WO2006/069750 WO 20060706
- Main IPC: F02D41/20
- IPC: F02D41/20 ; H01L41/04
Abstract:
The invention relates to a method and a device for offsetting bounce effects in a piezo-actuated injection system of an internal combustion engine using a control valve actuated by a piezoelectric actuator. The inventive method comprises the following steps: detecting an actual bounce behavior of the control valve, and determining and offsetting a deviation between the actual bounce behavior and a desired bounce behavior of the control valve, thereby generating an actuation information for the control valve which influences a speed characteristic of a needle of the control valve. The invention also relates to a device for carrying out the inventive method.
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